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单项选择题

链接打开文件count.php时使用键名uname提交数据“liuhong”,超链接href属性的取值为()

A.href="count.php"?uname="liuhong"
B.href="count.php?uname:liuhong"
C.href="count.php?uname=liuhong"
D.href="count.php"?uname:"liuhong"